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MySQL: Fastest way to count number of rows
Which way to count a number of rows should be faster in MySQL?
12 Answers
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MySQL pagination without double-querying?
I was wondering if there was a way to get the number of results from a MySQL query, and at the same time limit the results.
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How can I get enum possible values in a MySQL database?
...wns with enum possible values from a DB automatically. Is this possible in MySQL?
24 Answers
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GetProperties() to return all properties for an interface inheritance hierarchy
...etProperties( bindingAttr);
}
return type.GetInterfaces().Union(new Type[] { type }).SelectMany(i => i.GetProperties(bindingAttr)).Distinct();
}
or, for an individual property:
static public PropertyInfo GetPropertyOrInterfaceProperty(this Type type, string propertyNa...
SQL Server equivalent of MySQL's NOW()?
I'm a MySQL guy working on a SQL Server project, trying to get a datetime field to show the current time. In MySQL I'd use NOW() but it isn't accepting that.
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How to store Java Date to Mysql datetime with JPA
Can any body tell me how can I store Java Date to Mysql datetime...?
12 Answers
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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...个时间点把数据包发送出去，怎么保证数据的完整性，ACK如何接收，如何进行重传，以及如何对链路进行管理和控制等等。LL层只负责把数据发出去或者收回来，对数据进行怎样的解析则交给上面的GAP或者ATTHost Controller Interface，...
Creating an R dataframe row-by-row
...based file systems are a good example (which evolved from concepts such as union mounts, which also ply both sides).
If R Core wanted to do this, underlying vector storage could function like a union mount. One reference to the vector storage might be valid for subscripts 1:N, while another refe...
MySQL Insert Where query
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MySQL INSERT Syntax does not support the WHERE clause so your query as it stands will fail. Assuming your id column is unique or primary key:
If you're trying to insert a new row with ID 1 you should be using:
INSERT INTO U...
How can I return pivot table output in MySQL?
If I have a MySQL table looking something like this:
8 Answers
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